Twin-nibbed marking pen



FIG. 1 is a perspective view of a twin-nibbed marking pen showing my new design.

FIG. 2 is a perspective view of the twin-nibbed marking pen with the cap members removed for convenience of illustration;

FIG. 3 is a front elevational view with respect to FIG. 1;

FIG. 4 is a left side elevational view with respect to FIG. 1;

FIG. 5 is a rear elevational view with respect to FIG. 1;

FIG. 6 is a top plan view with respect to FIG. 1;

FIG. 7 is a bottom plan view with respect to FIG. 1;

FIG. 8 is a front elevational view with respect to FIG. 2;

FIG. 9 is a right side elevational view with respect to FIG. 2;

FIG. 10 is a bottom plan view thereof with respect to FIG. 2;

FIG. 11 is a top plan view thereof with respect to FIG. 2. 

The ornamental design for a twin-nibbed marking pen, as shown. 